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10W-40 Advanced Synthetic Motorcycle Oil

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10W-40 Advanced Synthetic Motorcycle Oil


Advanced multi-functional formula for both domestic and foreign motorcycles. Recommended for high-performance liquid or air-cooled 4-stroke engines and transmissions and both 4- and 2-stroke motorcycles. Wet-clutch compatible. Not recommended where an API GL-4 or GL-5 gear oil is required.

Product Code: MCFQT-EA Ordering Instructions
Package Size:
Unit of Measure:
Retail Price (USD):

Package sizes include:

  • Quart Bottle
  • 1-Gallon Bottle
  • 30-Gallon Drum
  • 55-Gallon Drum

Harley-Davidson/AMSOIL Oil Chart

Erik Buell Talks About AMSOIL Motorcycle Oils

AMSOIL Synthetic 10W-40 Motorcycle Oil (MCF) is a premium oil designed for those who demand the absolute best lubrication for their motorcycles. AMSOIL MCF is the result of extensive research, and it is specially formulated to excel in all areas unique to motorcycles, including high engine RPM, wet clutch lubrication, extreme pressure regions of gears and rust common to short drives and storage.

AMSOIL MCF is multi-functional and fulfills the requirements of both domestic and foreign motorcycles. It outperforms other conventional and synthetic motorcycle oils.

AMSOIL, the leader in synthetic lubrication, produced the world's first API qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL The First in Synthetics® to do the best job protecting your motorcycle.

Reduces Friction, Heat and Wear
In high heat conditions, engine protection is not sacrificed with AMSOIL Synthetic Motorcycle Oil. It has the best high temperature film strength (see High Temperature Viscosity Protection graph below) of all oils tested and contains a heavy treatment of anti-wear additives to reduce wear regardless of the operating conditions (see Wear Comparison graph at right). AMSOIL 10W-40 Motorcycle Oil is thermally (heat) stable and contains maximum levels of oxidation inhibitor additives. It is extremely resistant to breakdown and engineered to prevent damaging sludge and carbon deposits for superior engine cleanliness.

Provides Extreme Pressure Quality Protection for Gears
With AMSOIL Synthetic Motorcycle Oil, there is no need for separate transmission lubricants. It is absolutely shear stable and will not thin out from mechanical activity. AMSOIL MCF performs like a gear lube without the negative effects of extreme pressure additives. In the FZG gear test, AMSOIL MCF achieved a perfect score with a zero wear rating (see photo below).

Delivers Superior Rust Protection
Motorcycles are prone to rust from storage, humidity and short drives. Rust can cause major damage such as uncontrolled wear, compression loss and blow-by. Good rust protection, however, comes by design and is not natural to engine oils. Unlike many motorcycle oils, AMSOIL MCF contains special anti-rust agents. It passes the ASTM D-1748 humidity cabinet rust test and clearly demonstrates superior rust protection (see photos below).

Provides Excellent Wet Clutch Performance
AMSOIL Synthetic 10W-40 Motorcycle Oil contains no friction modifiers and promotes smooth shifting and positive clutch engagement. AMSOIL MCF controls heat and prevents slippage and glazing, helping improve clutch life. AMSOIL Synthetic 10W-40 Motorcycle Oil meets the wet clutch frictional requirements of JASO Standard T903: 2006, MA/MA2 and ISO-L-EMA2 of ISO Standard 24254:2007.

G2089 High temp viscosity

AMSOIL Synthetic 10W-40 Motorcycle Oil is recommended for liquid or air-cooled 4-stroke engines. It meets SAE 80W/90, API GL-1 gear oil requirements and is recommended for transmissions on both 4- and 2-stroke motorcycles. AMSOIL MCF is recommended for Honda®, Kawasaki®, Yamaha®, Suzuki®, BMW®, Husqvarna®, Victory® and other motorcycles where 10W-40 or 20W-40 engine oils or SAE 80W/90, GL-1 gear oils are used. Not recommended where an API GL-4 or GL-5 gear oil is required.

AMSOIL Synthetic 10W-40 Motorcycle Oil is compatible with conventional and synthetic motor oils;
however, mixing oils may shorten the oil life expectancy and reduce the performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed.

Aftermarket oil additives are not recommended for use with AMSOIL motorcycle oil.

For on-road use in engines and transmissions, change AMSOIL MCF and AMSOIL engine oil filter at twice the motorcycle manufacturer change interval or one year, whichever comes first. Change other brand oil filters at standard intervals.

For off-road use in engines and transmissions, change AMSOIL MCF at the standard motorcycle manufacturer change interval.

For racing or in engines modified from the original factory design, no change interval recommendation is made. Oil changes are at the owner’s discretion.

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS). An MSDS is available via the Internet at or upon request at (715) 392-7101. Keep Out of Reach of Children. Don’t pollute. Return used oil to collection centers.

For warranty information, visit

SAE 10W-40 Synthetic Motorcycle Oil (MCF)
Kinematic Viscosity @ 100°C, cSt (ASTM D445) 14.2
Kinematic Viscosity @ 40°C, cSt (ASTM D445) 91.2
Viscosity Index (ASTM D2270) 161
Pour Point °C (°F) (ASTM D97) -47 (-53)
Flash Point °C (°F) (ASTM D92) 230 (446)
High-Temperature/High-Shear Viscosity (ASTM D5481 @ 150°C, 1.0 X 106 s-1), cP 4.4
Four-Ball Wear Test (ASTM D4172 @ 40 kgf, 150°C, 1800 rpm, 1 hr), Scar, mm 0.40
FZG (ASTM D5182), Load State Pass (Wear in mm) 13 (0 mm)
Noack Volatility, % weight loss (g/100g) (ASTM D5800) 8.8
Foam (ASTM D892, Sequence I, II & III) 0/0/0
Shear Stability Kurt Orbahn (ASTM D6278), % viscosity change 120 cycles 0.50
Rust Test - Humidity Cabinet (ASTM D1748) No Rust, PASS
Total Base Number 11.1
MCF Packaging Information
Code Package Size Unit of Measure Product
MCFQT (MCFQT-EA) Quart Each SAE 10W-40 Synthetic Motorcycle Oil: (1) quart bottle
MCFQT (MCFQT-CA) Quart Case of 12 SAE 10W-40 Synthetic Motorcycle Oil: 12 QUARTS
MCF1G (MCF1G-EA) Gallon Each SAE 10W-40 Synthetic Motorcycle Oil: 1 GALLON
MCF1G (MCF1G-CA) Gallon Case of 4 SAE 10W-40 Synthetic Motorcycle Oil: 4 GALLONS
MCF30 (MCF30-EA) 30-Gallon Drum Each SAE 10W-40 Synthetic Motorcycle Oil: 30 GALLON DRUM
MCF55 (MCF55-EA) 55-Gallon Drum Each SAE 10W-40 Synthetic Motorcycle Oil: 55 GALLON DRUM
MCF27 (MCF27-EA) 275-Gallon Tote Each Syn Motorcycle Oil SAE 10w-40